考虑到强飞秒激光脉冲传播过程中波矢量解谐变化的气体谐波产生中的相位同步问题

IF 0.6 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Bulletin of the Lebedev Physics Institute Pub Date : 2024-10-18 DOI:10.3103/S1068335624601481

K. V. Lvov, S. Yu. Stremoukhov

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引用次数: 0

摘要

考虑到强飞秒激光脉冲传播过程中波矢量失谐的变化，提出了一种确定气体中谐波产生的相位同步条件的替代方法。根据对氩介质产生三次谐波的数值研究，确定了介质对激光辐射吸收的比例规律和光谱场成分的相位调制规律，这些规律将相互作用的宏观参数（压力、强度和介质电离程度）联系在一起。我们研究了通过增加气体喷射压力来增加三次谐波信号的可能性，同时将吸收保持在较低水平。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Phase Synchronism in the Generation of Harmonics in Gas Taking into Account Changes in the Wave Vector Detuning during the Propagation of an Intense Femtosecond Laser Pulse

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Phase Synchronism in the Generation of Harmonics in Gas Taking into Account Changes in the Wave Vector Detuning during the Propagation of an Intense Femtosecond Laser Pulse

An alternative approach to determining the conditions of phase synchronism in the generation of harmonics in gases is proposed to take into account changes in the wave vector detuning during the propagation of an intense femtosecond laser pulse. Based on a numerical study of the third-harmonic generation by an argon medium, laws of scaling laser radiation absorption in the medium and of the phase modulation of spectral field components, which link macroparameters of interaction (pressure, intensity, and degree of medium ionization), have been identified. The possibility was investigated of increasing the third harmonic signal by increasing the gas jet pressure while keeping absorption at a low level.

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来源期刊

Bulletin of the Lebedev Physics Institute PHYSICS, MULTIDISCIPLINARY-

CiteScore

0.70

自引率

25.00%

发文量

审稿时长

6-12 weeks

期刊介绍： Bulletin of the Lebedev Physics Institute is an international peer reviewed journal that publishes results of new original experimental and theoretical studies on all topics of physics: theoretical physics; atomic and molecular physics; nuclear physics; optics; lasers; condensed matter; physics of solids; biophysics, and others.